GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

ABS/TCC Switch

Under the left side of the IP, near the brake pedal

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Brake Lamp Driver Module

Under the right of the IP, near the rear of the IPC

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Brake Pressure Modular Valve (BPMV)

Left front of the engine compartment, near the base of the radiator support

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Electronic Brake (and Traction) Control Module (EBCM/EBTCM) C1

In the left front of the engine compartment, near the base of the radiator support

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Electronic Brake (and Traction) Control Module (EBCM/EBTCM) C2

In the left front of the engine compartment, near the base of the radiator support

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Instrument Cluster (Buick)

In the left side of the IP, above the steering column

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Instrument Cluster C1 (Oldsmobile)

In the left side of the IP, above the steering column

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Instrument Cluster C1 (Pontiac)

In the left side of the IP, above the steering column

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Instrument Cluster C2 (Oldsmobile)

In the left side of the IP, above the steering column

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Instrument Cluster C2 (Pontiac w/U50/U2F)

In the left side of the IP, above the steering column

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

IP Fuse Block

Under the left side of the IP, on the left IP sound insulator

Power and Grounding Component Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Lamp Control Module (LCM) C1

In the center of the IP, below the center heater outlets

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Lamp Control Module (LCM) C2

In the center of the IP, below the center heater outlets

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

LH Front Wheel Speed Sensor

Behind the left front wheel, on the back of the hub

Antilock Brake System Component Views

Antilock Brake System Connector End Views

LH Rear Wheel Speed Sensor

Behind the left rear wheel, on the back of the hub

Antilock Brake System Component Views

Antilock Brake System Connector End Views

LH Underhood Fuse Block

Center rear of the engine compartment, near the cowl

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Powertrain Control Module (PCM) C1

In the left front of the engine compartment, near the air cleaner housing

Engine Controls Component Views in Engine Controls - 3.8L

Powertrain Control Module Connector End Views in Engine Controls - 3.8L

Powertrain Control Module (PCM) C2

In the left front of the engine compartment, near the air cleaner housing

Engine Controls Component Views in Engine Controls - 3.8L

Powertrain Control Module Connector End Views in Engine Controls - 3.8L

Remote Indicator Bank

On the left side of the instrument panel, near the instrument cluster

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

RH Front Wheel Speed Sensor

Behind the right front wheel, on the back of the hub

Antilock Brake System Component Views

Antilock Brake System Connector End Views

RH IP Fuse Block

Under the right side of the instrument panel, near the rear of the instrument panel compartment

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

RH Rear Wheel Speed Sensor

Behind the right rear wheel, on the back of the hub

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Shift Select Switch C1

On the center front passenger compartment, under the front of the console

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Shift Select Switch C2

On the center front passenger compartment, under the front of the console

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Stoplamp/BTSI Switch C2

Under the left side of the instrument panel, near the brake pedal

Tilt Wheel/Column Component Views in Steering Wheel and Column - Tilt

Tilt Wheel/Column Connector End Views in Steering Wheel and Column - Tilt

Traction Control Disable Switch (Oldsmobile)

Under the left side of the IP, on the knee bolster

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Variable Steering Actuator

Right rear of the engine compartment, on the power steering rack

Steering Assist Component Views in Variable Effort Steering

Steering Assist Connector End Views in Variable Effort Steering

C101 (66 cavities)

Body harness to the engine harness, right rear of the engine compartment near the strut tower

Harness Routing Views in Wiring Systems

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C119 (1 cavity)

Body harness to the EBTCM ground harness, left front corner of the engine compartment near the EBTCM

Harness Routing Views in Wiring Systems

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C120 (2 cavities)

Engine harness to the left wheel speed harness, left rear of the engine compartment

Harness Routing Views in Wiring Systems

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C121 (2 cavities)

Engine harness to the right wheel speed harness, in the right rear of the engine compartment

Harness Routing Views in Wiring Systems

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C200 (116 cavities)

Body harness to the IP harness, under the center of the IP

Harness Routing Views in Wiring Systems

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C415 (4 cavities)

Body harness to the rear wheel speed sensor, under the center rear of the vehicle

Harness Routing Views in Wiring Systems

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G104

Left front of the engine compartment, near the air cleaner housing

Power and Grounding Component Views in Wiring Systems

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G105

Right front of the engine compartment, near the battery

Power and Grounding Component Views in Wiring Systems

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G106

Left front of the engine compartment, near the air cleaner housing

Power and Grounding Component Views in Wiring Systems

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G202

Left front of the passenger compartment, behind the left kick panel trim plate

Power and Grounding Component Views in Wiring Systems

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P100

Left rear of the engine compartment, near the left front strut tower

Power and Grounding Component Views in Wiring Systems

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P101

Right rear of the engine compartment, near the right front strut tower

Power and Grounding Component Views in Wiring Systems

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P403

Right front of the rear compartment, in the rear compartment floor

Power and Grounding Component Views in Wiring Systems

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S208

In the body harness, approximately 6 cm (2.3 in) from the center IP harness channel breakout

Harness Routing Views in Wiring Systems

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S228

In the body harness, approximately 17.5 cm (6.8 in) from the center instrument panel harness channel breakout

Harness Routing Views in Wiring Systems

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S233

In the body harness, approximately 22 cm (8.6 in) into the C101 breakout

Harness Routing Views in Wiring Systems

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S249 (Buick)

In the instrument panel harness, approximately 9 cm (3.5 in) from the instrument cluster C1 breakout

Harness Routing Views in Wiring Systems

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S249 (Oldsmobile)

In the instrument panel harness, approximately 17 cm (6.7 in) from C200

Harness Routing Views in Wiring Systems

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S249 (Pontiac)

In the instrument panel harness, approximately 3.5 cm (1.3 in) from the instrument cluster C1 breakout

Harness Routing Views in Wiring Systems

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S261

In the instrument panel harness, approximately 5 cm (1.9 in) into the sun load sensor breakout

Harness Routing Views in Wiring Systems

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S263

In the instrument panel harness, approximately 48 cm (18.9 in) from the radio breakout

Harness Routing Views in Wiring Systems

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S270

In the body harness, approximately 8 cm (3.1 in) from the right edge of the instrument panel harness channel end

Harness Routing Views in Wiring Systems

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S299 (Buick)

In the instrument panel harness, approximately 12 cm (4.7 in) into the instrument cluster C1 breakout

Harness Routing Views in Wiring Systems

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S299 (Pontiac)

In the instrument panel harness, approximately 12.5 cm (4.9 in) into the instrument cluster C1 breakout

Harness Routing Views in Wiring Systems

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